%0 Journal Article
%T 轮对结构和扣件刚度对钢轨波磨的影响<br>Influence of Wheelset Structure and Fastener Stiffness on Rail Corrugation
%A 崔晓璐
%A 陈光雄
%A 杨宏光&lt
%A br&gt
%A CUI Xiaolu
%A CHEN Guangxiong
%A YANG Hongguang
%J 西南交通大学学报
%D 2017
%R 10.3969/j.issn.0258-2724.2017.01.016
%X 为研究地铁线路小半径曲线轨道上钢轨波磨的形成机理和影响因素，基于轮轨摩擦耦合自激振动导致钢轨波磨的观点，建立了小半径曲线轨道上由动车轮对-钢轨-轨枕组成的轮轨系统有限元模型.采用复特征值分析和瞬时动态分析研究了轮轨系统的稳定性和动态特性.计算结果表明：在饱和蠕滑力作用下，轮轨系统存在较强的摩擦自激振动趋势，即产生钢轨波磨的趋势；动车轮对上齿轮箱的安装位置对系统的自激振动影响较小；扣件横向刚度对自激振动的影响较小，垂向刚度对自激振动的影响较为明显；不稳定振动随扣件垂向刚度的增加呈现先增大后减小的趋势，当其垂向刚度约为20 MN/mm时，钢轨波磨最容易发生.<br>： In order to study the formation mechanism and influence factors of rail corrugations on a sharp curved track of metro line, a finite element model for a wheelset-track system on a sharp curved track, which consists of a power wheelset, two rails and a series of sleepers, is established from the viewpoint of friction-induced vibration causing rail corrugation. Using this model, the stability and dynamic performance of the wheelset-track system are analyzed by the complex eigenvalue analysis and transient dynamic analysis. The simulation results show that the friction-induced vibration of the wheelset-track system is more likely to occur under the effect of the saturated creep force, which is able to cause rail corrugation. Meanwhile, the gearbox location on the leading wheelset has a little influence on the self-excited vibration of the system. The lateral stiffness of the fastener has a little influence, while the vertical stiffness has a significant influence on self-excited vibration. As the vertical stiffness of fastener increases, the unstable vibration of the wheelset-track system presents a trend of first increase and then decrease. When the vertical stiffness is about 20 MN/mm, rail corrugation is most likely to occur
%K 钢轨波磨
%K 自激振动
%K 轮对结构
%K 扣件刚度
%K &lt
%K br&gt
%K rail corrugation
%K friction-induced vibration
%K wheelset structure
%K fastener stiffness
%U http://manu19.magtech.com.cn/Jweb_xnjd/CN/abstract/abstract12382.shtml